I don't understand how infinite scrolling (suggested in other answers) would help you for the front page (cms_index_index), as it doesn't have a multi-page category list and therefore would be useless. That approach is wrong.
I don't know what your front page looks like, but the philosophy is this:
If you have multiple rows of products, convert them to a slider on mobile.
I understand you are seeking specific instructions on how to do this, but it's not a 5 minute solution. It will likely require some development.